$(function () {

    $(".j-mu").css("min-height",(winHeight()-60)+"px");
    $(window).resize(function () {
        $(".j-mu").css("min-height",(winHeight()-60)+"px");
    })
    
})

function winHeight() {
    var winHeight;//窗口高度
    if (window.innerHeight){
        winHeight = window.innerHeight;
    }else if ((document.body) && (document.body.clientHeight)){
        winHeight = document.body.clientHeight;
    }
    return winHeight;
}



